{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:SFG5NVYCV3ENGU6LJDWE6KRY6F","short_pith_number":"pith:SFG5NVYC","canonical_record":{"source":{"id":"1505.02388","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.OH","submitted_at":"2015-05-10T14:43:17Z","cross_cats_sorted":[],"title_canon_sha256":"6daa7cac8dd600cb4067735e724d2686620f3030d71eb12c609e673ffc2faa5d","abstract_canon_sha256":"e6efccecea9a2d8a20d86da83b06d9f8aa0c50b135b47bf2fd945ee6c2603c2d"},"schema_version":"1.0"},"canonical_sha256":"914dd6d702aec8d353cb48ec4f2a38f15f1e57be275105615e376c34f59d6df4","source":{"kind":"arxiv","id":"1505.02388","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.02388","created_at":"2026-05-18T02:16:18Z"},{"alias_kind":"arxiv_version","alias_value":"1505.02388v1","created_at":"2026-05-18T02:16:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.02388","created_at":"2026-05-18T02:16:18Z"},{"alias_kind":"pith_short_12","alias_value":"SFG5NVYCV3EN","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"SFG5NVYCV3ENGU6L","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"SFG5NVYC","created_at":"2026-05-18T12:29:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:SFG5NVYCV3ENGU6LJDWE6KRY6F","target":"record","payload":{"canonical_record":{"source":{"id":"1505.02388","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.OH","submitted_at":"2015-05-10T14:43:17Z","cross_cats_sorted":[],"title_canon_sha256":"6daa7cac8dd600cb4067735e724d2686620f3030d71eb12c609e673ffc2faa5d","abstract_canon_sha256":"e6efccecea9a2d8a20d86da83b06d9f8aa0c50b135b47bf2fd945ee6c2603c2d"},"schema_version":"1.0"},"canonical_sha256":"914dd6d702aec8d353cb48ec4f2a38f15f1e57be275105615e376c34f59d6df4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:16:18.919663Z","signature_b64":"2QaonFrEtyUeeRM8PqgXtmkd66CG4K0w2yymubmyXVx34nEg/gpWgwTavGyKCjFdDk1aEfZ+6KBgV4Q/Y3wTCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"914dd6d702aec8d353cb48ec4f2a38f15f1e57be275105615e376c34f59d6df4","last_reissued_at":"2026-05-18T02:16:18.919016Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:16:18.919016Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.02388","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:16:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IPE9G/DWrSfzA9DzXCGSYEmC7ITfnhCbcSIe+zls9fGttxwhbi/vBSs0zf3e3TaWAIP0zZLOseQVcSusCu/BCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T21:19:25.358311Z"},"content_sha256":"5830789bba30d178c51da681dd07c894e0fa55c389307cdd0832cf81c34acfda","schema_version":"1.0","event_id":"sha256:5830789bba30d178c51da681dd07c894e0fa55c389307cdd0832cf81c34acfda"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:SFG5NVYCV3ENGU6LJDWE6KRY6F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"UbiBreathe: A Ubiquitous non-Invasive WiFi-based Breathing Estimator","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.OH","authors_text":"Heba Abdelnasser, Khaled A. Harras, Moustafa Youssef","submitted_at":"2015-05-10T14:43:17Z","abstract_excerpt":"Monitoring breathing rates and patterns helps in the diagnosis and potential avoidance of various health problems. Current solutions for respiratory monitoring, however, are usually invasive and/or limited to medical facilities. In this paper, we propose a novel respiratory monitoring system, UbiBreathe, based on ubiquitous off-the-shelf WiFi-enabled devices. Our experiments show that the received signal strength (RSS) at a WiFi-enabled device held on a person's chest is affected by the breathing process. This effect extends to scenarios when the person is situated on the line-of-sight (LOS) b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.02388","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:16:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PTI4MHRSZDPW/BMRqm1WxkbZYTIB0CUSMqHYN12SFkLDYjKz8Ob/ROPl7ZrTASt/HY/G2i0YgxD/GlwnJ6UZCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T21:19:25.358678Z"},"content_sha256":"eaa8e31ee094d09b672959657e66f24436121025a65617ec7b60f7f6eee36674","schema_version":"1.0","event_id":"sha256:eaa8e31ee094d09b672959657e66f24436121025a65617ec7b60f7f6eee36674"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SFG5NVYCV3ENGU6LJDWE6KRY6F/bundle.json","state_url":"https://pith.science/pith/SFG5NVYCV3ENGU6LJDWE6KRY6F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SFG5NVYCV3ENGU6LJDWE6KRY6F/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-30T21:19:25Z","links":{"resolver":"https://pith.science/pith/SFG5NVYCV3ENGU6LJDWE6KRY6F","bundle":"https://pith.science/pith/SFG5NVYCV3ENGU6LJDWE6KRY6F/bundle.json","state":"https://pith.science/pith/SFG5NVYCV3ENGU6LJDWE6KRY6F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SFG5NVYCV3ENGU6LJDWE6KRY6F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:SFG5NVYCV3ENGU6LJDWE6KRY6F","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"e6efccecea9a2d8a20d86da83b06d9f8aa0c50b135b47bf2fd945ee6c2603c2d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.OH","submitted_at":"2015-05-10T14:43:17Z","title_canon_sha256":"6daa7cac8dd600cb4067735e724d2686620f3030d71eb12c609e673ffc2faa5d"},"schema_version":"1.0","source":{"id":"1505.02388","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.02388","created_at":"2026-05-18T02:16:18Z"},{"alias_kind":"arxiv_version","alias_value":"1505.02388v1","created_at":"2026-05-18T02:16:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.02388","created_at":"2026-05-18T02:16:18Z"},{"alias_kind":"pith_short_12","alias_value":"SFG5NVYCV3EN","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"SFG5NVYCV3ENGU6L","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"SFG5NVYC","created_at":"2026-05-18T12:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:eaa8e31ee094d09b672959657e66f24436121025a65617ec7b60f7f6eee36674","target":"graph","created_at":"2026-05-18T02:16:18Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Monitoring breathing rates and patterns helps in the diagnosis and potential avoidance of various health problems. Current solutions for respiratory monitoring, however, are usually invasive and/or limited to medical facilities. In this paper, we propose a novel respiratory monitoring system, UbiBreathe, based on ubiquitous off-the-shelf WiFi-enabled devices. Our experiments show that the received signal strength (RSS) at a WiFi-enabled device held on a person's chest is affected by the breathing process. This effect extends to scenarios when the person is situated on the line-of-sight (LOS) b","authors_text":"Heba Abdelnasser, Khaled A. Harras, Moustafa Youssef","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.OH","submitted_at":"2015-05-10T14:43:17Z","title":"UbiBreathe: A Ubiquitous non-Invasive WiFi-based Breathing Estimator"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.02388","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:5830789bba30d178c51da681dd07c894e0fa55c389307cdd0832cf81c34acfda","target":"record","created_at":"2026-05-18T02:16:18Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"e6efccecea9a2d8a20d86da83b06d9f8aa0c50b135b47bf2fd945ee6c2603c2d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.OH","submitted_at":"2015-05-10T14:43:17Z","title_canon_sha256":"6daa7cac8dd600cb4067735e724d2686620f3030d71eb12c609e673ffc2faa5d"},"schema_version":"1.0","source":{"id":"1505.02388","kind":"arxiv","version":1}},"canonical_sha256":"914dd6d702aec8d353cb48ec4f2a38f15f1e57be275105615e376c34f59d6df4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"914dd6d702aec8d353cb48ec4f2a38f15f1e57be275105615e376c34f59d6df4","first_computed_at":"2026-05-18T02:16:18.919016Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:16:18.919016Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2QaonFrEtyUeeRM8PqgXtmkd66CG4K0w2yymubmyXVx34nEg/gpWgwTavGyKCjFdDk1aEfZ+6KBgV4Q/Y3wTCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:16:18.919663Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.02388","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5830789bba30d178c51da681dd07c894e0fa55c389307cdd0832cf81c34acfda","sha256:eaa8e31ee094d09b672959657e66f24436121025a65617ec7b60f7f6eee36674"],"state_sha256":"88544f708b730b1cbe12d9c831bbdac71b58f63c70695a5285539bca110d721f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ScGrzFporu0y8SHn7pP8TRT4HZsnpN/cx9d81uYhOAtYXXLONoUBYFXDDYAXMCXwFmHtWyn7/srdG0gl2RCIBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-30T21:19:25.360651Z","bundle_sha256":"c48c3e2b4d60297a5d37bc9e54bba3335c078590fbaf47b1c3624aae9534d4fd"}}